An electromagnetic lock is a type of locking mechanism that uses an electromagnet to secure a door. When electricity flows through the electromagnet, it creates a strong magnetic field that holds a metal plate on the door frame, preventing the door from being opened. These locks are commonly used in commercial buildings for added security. Electromagnetic locks are often integrated with access control systems, allowing only authorized individuals to unlock the door. They can be activated by keycards, keypads, or biometric scanners, making them a popular choice for high-security areas. Their design ensures that the door remains locked as long as power is supplied.